Toshiba RAS-09LKV-UL - Manual (Page 78)

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(3) Only the indoor motor fan does not operate
<Primary check>
1. Is it possible to detect the power supply voltage (AC208–230V) between and on the terminal block?
2. Does the indoor fan motor operate in cooling operation?
(In heating operation, the indoor fan motor does not operate for approximately 10 minutes after it is turned
on, to prevent a cold air from blowing in.)
( RAS-09LKV-UL)
<Check procedure>
Replace the fan motor.
YES
NO
NO
YES
YES
NO
NO
YES
YES
NO
NO
YES
Does the fan stop in
no operating status?
Control P.C. board is defective.
Start the operation
with low fan setting
in cool operation.
Does AC 115 V
or higher voltage apply
to between red and black
lead of fan motor?
Does the fan rotate?
Change the setting of
cooling to high fan.
Operation
stops
Shut off the power supply.
Does the cross flow
fan rotate normally?
Is the rotation signal (DC+5 V 0 V)
output between k (gray lead wire)
and l (brown lead wire) of the motor
connector (CN33) when rotating the
cross flow fan by hand in no operating
status? (1 pulse/one turn)
Turn on the power supply.
Replace
bearing of cross
flow fan
Turn the power supply.
Shut off the
power supply once.
Does the fan speed
become higher?
Reconecting the
interconnetion cable
and terminal
block.
Replace the P.C. board.
Normal
Replace the control
P.C. board.
Does an operation
LED 1 Hz blink?
Check connecting
cable or power
supply cord complely?
Check 5V at
display unit? Main P.C. Board?
Does the fan motor
operate smoothly?
YES
NO
YES
YES
Change Display unit
YES
Check 5V at
NO
NO
YES
FILE NO. SVM-10019
NO NO
L1 L2